TWM493523U - Inner film structure of metal lid - Google Patents

Description

Inner membrane structure of metal cover

This creation relates to the metal lid of a plastic container or glass container, and more specifically to the inner membrane structure of the metal lid.

The metal cover of the plastic container or the glass container is covered with a ring-shaped inner film. The meaning of the inner film of the layer is to increase the sealing property between the metal cover and the container mouth, prevent the contents from leaking, and prevent the external dirt from infiltrating into the container. In the past, the inner membrane was made of PVC material [Polyvinylchloride (PVC)], hereinafter referred to as PVC inner membrane.

When the PVC inner membrane is in contact with the food in the container, the phthalate plasticizer is dissolved, and medical research has confirmed that it has a significant adverse effect on the human body. The metal cover is discarded and recycled to the process of melting and processing in the electric arc furnace steelmaking plant. The PVC inner membrane will produce dioxin toxin, which is extremely harmful to the human body and the environment.

In view of the above problems, the metal cover should be removed from the PVC inner film.

The problem to be solved by this creation is that the metal cover is excluded from the use of the PVC inner membrane.

The metal cap inner membrane structure which solves the above problems is characterized in that the inner mask of the metal cap has an annular inner membrane having a horizontal membrane and a side membrane integrally connected, the level a diaphragm attached to a circumferential portion of the top surface of the metal cover, the side diaphragm attached to the gold On the inner side of the skirt of the cover, the material of the annular inner membrane is selected from the group consisting of liquid silicone rubber (LSR), two-liquid addition reaction type silicone rubber, two-liquid addition reaction type silicone rubber, and polyurethane (PU). .

Further, the longitudinal length of the side diaphragm may be equal to or smaller than the lateral width of the horizontal diaphragm.

Further, the thickness of the annular inner membrane is between 0.8 and 1.4 mm.

Further, the hardness of the annular inner membrane is ShoreA 60-90.

Further, the side diaphragm may completely cover the inner side of the skirt of the metal cover, or cover the upper end of the inner side of the skirt, or cover the top inner surface of the metal cover and the inner corner of the skirt.

The effect of the present invention is to increase the sealing property of the metal lid and the container mouth through the annular inner membrane, prevent the contents from leaking, and prevent the external dirt from infiltrating into the container.

The annular inner membrane is made of an environmentally friendly non-toxic material.

The annular inner membrane has good ductility and rebound strength.

10‧‧‧Metal cover

11‧‧‧ top inside

12‧‧‧ skirt

20‧‧‧ annular intima

21‧‧‧ horizontal diaphragm

22‧‧‧ side diaphragm

30‧‧‧ glass container mouth

The first figure is a cross-sectional view of a first embodiment of a metal cap and an annular inner membrane.

The second figure is a cross-sectional view of a second embodiment of the creative metal cover and the annular inner membrane.

The third figure is a cross-sectional view of the first embodiment of the creative metal cover and the annular inner film.

The fourth figure is a schematic view of the combination of the creative metal cover and the annular inner membrane and the container mouth.

In order to facilitate the explanation of the central idea expressed in the above-mentioned new content column, Expressed in the specific examples. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above. In the following description, like elements are denoted by the same reference numerals.

As shown in the first figure, a partial cross section of a metal cover 10 and the present annular inner membrane 20 is described. The annular inner membrane 20 has a horizontal membrane 21 and a side membrane 22 integrally connected to each other. The horizontal membrane 21 is attached to a circumferential portion of the top inner surface 11 of the metal cover 10, and the side membrane 22 is attached to the metal. The inside of the skirt 12 of the cover 10. The material of the annular inner membrane is selected from the group consisting of liquid silicone rubber (LSR), two-liquid addition reaction type silicone rubber, two-liquid addition reaction type silicone rubber, and polyurethane (PU). The thickness of the annular inner membrane is between 0.8 and 1.4 mm. The hardness of the annular inner membrane is ShoreA 60 to 90. The materials for making the annular inner membrane are all materials which are environmentally friendly and non-toxic to the human body. The silicone material selected in this creation is a mixture of A agent and B agent, A agent is Silicone rubber, and B agent is a mixture of curing agent and Platinum catalyst.

As shown in the first figure, the side diaphragm 22 completely covers the inner side of the skirt 12 of the metal cover 10.

As shown in the second figure, the side diaphragm 22 covers the upper section of the inside of the skirt 12 of the metal cover 10.

As shown in the third figure, the side diaphragm 22 covers the top inner surface 11 of the metal cover 10 and the inner corner of the skirt portion 12.

As shown in the fourth figure, the metal cover 10 is combined with a glass container port 30, which has good ductility and rebound strength, so that the sealing force of the cover can be matched with the glass container. The sealing of the mouth 30 prevents the contents from leaking and also prevents the external dirt from penetrating into the container.

10‧‧‧Metal cover

11‧‧‧ top inside

12‧‧‧ skirt

20‧‧‧ annular intima

21‧‧‧ horizontal diaphragm

22‧‧‧ side diaphragm

Claims (6)

An inner membrane structure of a metal cover, characterized in that: an inner cover of a metal cover has an annular inner membrane having a horizontal membrane and a side membrane integrally connected, the horizontal membrane being attached to a circumferential portion of the top surface of the metal cover, the side film is attached to the inner side of the skirt of the metal cover; the annular inner film is made of liquid silicone rubber (LSR), two liquid addition reaction type silicone rubber, The two-liquid addition reaction type silicone rubber and polyurethane (PU) are selectively cured. The inner membrane structure of the metal cover according to claim 1, wherein the annular inner membrane has a thickness of 0.8 to 1.4 mm. The inner membrane structure of the metal cover according to the first aspect of the invention, wherein the annular inner membrane has a hardness of Shore A 60 to 90. The inner membrane structure of the metal cover according to claim 1, wherein the side membrane covers the inner side of the skirt of the metal cover. The inner membrane structure of the metal cover according to claim 1, wherein the side membrane covers an upper portion of the inner side of the skirt of the metal cover. The inner membrane structure of the metal cover according to claim 1, wherein the side membrane covers the top inner surface of the metal cover and the inner corner of the skirt.